Water-closet



Patented Sept. 29, 1925.

ROBERT J. MCLANAHAN, OF WOODLAWN, PENNSYLVANIA.

g WATER-CLOSET.

Application led May 7, 1925. Serial No. 28,600.

To all whom at may concern: Y

Be it known that I, ROBERT J. MCLANA- HAN, residing at l/Voodlawn, in the county of Beaver and State of Pennsylvania, a citizen ofthe United States, have invented or discovered certain new and useful Improvements in Water-Closets, of which improvements the following is a specification.

My invention concerns the structure of water closets, and consists in an arrangement whereby eficiency in service is increased. The invention is found in an improvement in the structure shown and described in Letters Patent of the United States, No. 1,531,117, granted me March 24, 1925.

The accompanying drawing is a view in vert-ical and medial section of a water closet embodying my present improvement, superadded to that of my earlier patent just mentioned.

The water closet installation includes a bowl 1, a flushing tank 2, a flushing pipe 3, and an overflow pipe 14. Flushing is effected in the usual manner, by unseating a valve, ordinarily in the form of a rubber ball 4, which controls vpassage from tank2 to pipe 3.

The bowl 1, formed ordinarily of porcelain or equivalent material is preferably formed in one piece with the passageways leading to and from the bowl. From the bowl at the bottom rises the ascending arm 6 of the siphon discharge pipe. The high point in the siphon discharge pipe determines the normal level a, of water within the bowl. Beneath the normal water level a nozzle port 5 is formed through the wall of the bowl, and the port is so disposed that the j et of water projected through it is spurted into the ascending arm 6 of the siphon discharge pipe.

The flushing pipe 3 is connected in continuity with a passageway 8, formed within' the bowl structure, opening at its lower end at a point below the normal level a of water within the bowl, and opening to the nozzle port 5. From this line of flow at a point lower than the normal level a of water within the bowl there is communication through the rising passageway 11 to the orifices 13 in the rim of the bowl. Through these orices streams emerge to wash the sides of the bowl.

The operation is familiar. Tater stands normally in the bowl, at the level indicated at a, and normally the flushing tank 2 is passageway 8. Part ofthe descending flood spurts through port 5 and sets up the emptying flow of water from the bowl through the siphon pipe Y6;another part rises through passageway 11 and, emerging in streams through orifices 13, washes the walls of the bowl. The descending flood brings valve 4 to its seat again, and flow of water ceases. The tank 2 fills again.

As I have explained in the specification of my earlier patent, mentioned above, the continuation of the fiushing pipe ,3 in the passageway 8 to a low point, vwhence a passageway 11 rises to the orifices 13, brings it about that always the flushing pipe is full of water, and throughout all the time of normal quiescence, since the valve 4 is situated at a point higherthan the level a, the weight of the column of water retained in pipe 3 tends to hold the valve 4 more firmly to its seat, and more certainly to prevent leakage.

My present invention has to do with the overflow pipe 14. Instead of causing this overflow pipe to open to passageway 11 at the upper end of that passageway (as in my earlier patent) I now conduct it to a point of discharge below the level a, and, as shown, to a point within the water passageway at the level of port' 5, and below the lower end of passageway 11. In consequence, the overflow stream, when it occurs, will be less effective to diminish the stress which holds valve 4 to its seat.

Furthermore I preferably arrange this overflow pipe as shown, within the relatively large flushing pipe 3 (which on that account may be made larger) and within the passageway 8, at the lower end of which it terminates with an open end. The overfiow pipe so arranged is concealed and the appearance of the fixture is better, and in addition to that there is diminution in the amount of pipe-fitting involved in making installation, as may be noted on comparing the drawing in this case with the corresponding figure of the earlier patent.

It will be perceived, on consideration of the drawing, that the orifice 5 may be donc away with, and the bowl wall made imperforate; and that, the structure being otherwise unchanged, the proportions may be such that a flushing stream of suiiicient magnitude may enter the bowl through rim 13 to produce the desired and characteristic siphon effect through pipe 6. I contemplate this alternative in the practice of my invention.

I claim as my invention:

l. In a water-closet structure the combination of a bowl provided with a flushing orifice in the rim and with a Siphon discharge passageway, whereby water normally stands at predetermined level within the bowl, a flushing tank, a conduit for the flushing stream with continuous and unported walls leading from the flushing tank downwards to a level lower than the normal water level within the bowl, and rising thence to the flushing orifice in the rim of the bowl, and an overflow pipe leading from the tank and discharging into said conduit, on the inflow side of the bowl and at a point lower than the normal water level within the bowl, substantially as described.

2. In a water-closet structure the comvbination of a bowl provided with a siphon discharge passageway, whereby water normally stands at predetermined level within the bowl, an upwardly directed nozzle opening into the ascending arm of the Siphon passageway at a point lower than the normal water level within the bowl, a Hushing tank, a conduit for the flushing stream with continuous unported walls leading from the flushing tank downward to the level of said nozzle, and ascending thence to an orifice at the upper rim of the bowl,

said nozzle opening from said conduit, and

an overflow pipe leading from the tank and discharging into said conduit on the inflow side of' the bowl and at a point lower than the normal water level within the bowl, substantially as described.

3. In a water-closet structure the combination of a bowl provided with a siphon discharge passageway, whereby water normally stands at predetermined level within the bowl, an upwardly directed nozzle opening into the ascending arm of the siphonpassageway at a point lower than the normal water level within the bowl, a flushing tank, a conduit for the flushing stream with continuous unported walls leading from the flushing tank downward to the level of said nozzle, and ascending thence to an orifice at the upper rim of the bowl, said nozzle opening from said conduit, andV an overflow pipe leading from the tank, extending within said conduit on the inflow side of the bowl and discharging into said conduit at a point low er than the normal water level within the bowl, substantially as described.

In testimony whereof I have hereunto set my hand.

RBERT J. MCLANAHAN. 

